Sequence b_3 (n) arising from homology of partitions with even number of blocks.

A003993

Sequence b_3 (n) arising from homology of partitions with even number of blocks.

Terms

    a(0) =2a(1) =12a(2) =46a(3) =152a(4) =474a(5) =1444a(6) =4358a(7) =13104a(8) =39346a(9) =118076a(10) =354270a(11) =1062856a(12) =3188618a(13) =9565908a(14) =28697782a(15) =86093408a(16) =258280290a(17) =774840940a(18) =2324522894a(19) =6973568760a(20) =20920706362a(21) =62762119172a(22) =188286357606a(23) =564859072912

External references