A177744 Number of conjugacy classes in PSL_2(q) as q runs through the primes and prime powers.

3, 4, 5, 5, 6, 9, 7, 8, 9, 17, 11, 12, 14, 15, 16, 17, 18, 33, 21, 23, 24, 26, 27, 29, 32, 33, 65, 36, 38, 39, 42, 43, 44, 47, 51, 53, 54, 56, 57, 59, 63, 65, 66, 129, 68, 71, 72, 77, 78, 81, 84, 86, 87, 89, 92, 93, 98, 99, 101, 102, 108, 114, 116, 117, 119, 122, 123, 124, 128

Offset: 1

Author

Jason Kimberley, May 22 2010

Keywords

• easy
• nonn

Crossrefs

q = A000961(n+1).

This is the row length sequence for A060247.

Cf. A124678.

Programs

Magma

[ NumberOfClasses(PSL(2,q)):q in [2..251] | IsPrimePower(q) ];