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Countings: Sequences per type

Sequences (per base, k-value or individual number) with own page in this Wiki:

Sequence Type counting
Mersenne primes number 51
Riesel primes k•2n-1 k-value 2,910
Riesel primes kbn-1, b>2 base 5
Proth primes k•2n+1 k-value 133
Proth primes kbn+1, b>2 base 5
Carol-Kynea primes (bn±1)2-2 base 381
Williams primes (b-1)bn-1 base 169
Williams primes (b-1)bn+1 base 153
Williams primes (b+1)bn-1 base 87
Williams primes (b+1)bn+1 base 82
Leyland numbers xy+yx number 1,814
Leyland numbers xy-yx number 1
Woodall primes nbn-1 base 20
Near Woodall primes (n-1)bn-1 base 3
Near Woodall primes (n+1)bn-1 base 2
Cullen primes nbn+1 base 30
Near Cullen primes (n-1)bn+1 base 1
Near Cullen primes (n+1)bn+1 base 1
Fermat numbers F(2) number 149
GF Divisors (2) number 183
Gen.Fermat numbers xGF(3) number 21
GF Divisors (3) number 202
Gen.Fermat numbers xGF(4) number 4
GF Divisors (4) number 61
Gen.Fermat numbers xGF(5) number 15
GF Divisors (5) number 362
Gen.Fermat numbers xGF(6) number 11
GF Divisors (6) number 147
Gen.Fermat numbers xGF(7) number 26
GF Divisors (7) number 439
Gen.Fermat numbers xGF(8) number 23
GF Divisors (8) number 363
Gen.Fermat numbers xGF(9) number 17
GF Divisors (9) number 346
Gen.Fermat numbers xGF(10) number 18
GF Divisors (10) number 273
Gen.Fermat numbers xGF(11) number 45
GF Divisors (11) number 740
Gen.Fermat numbers xGF(12) number 14
GF Divisors (12) number 308
all GF Divisors number 1154
Number classes
General numbers
Special numbers
Prime numbers