a(n) = lcm((d1 + 1), (d2 + 1), ..., (dk + 1)), where d1, d2, ..., dk are the prime factors of the n-th Fermat pseudoprime to base 2, A001567(n).

A216404

a(n) = lcm((d1 + 1), (d2 + 1), ..., (dk + 1)), where d1, d2, ..., dk are the prime factors of the n-th Fermat pseudoprime to base 2, A001567(n).

Terms

    a(0) =96a(1) =36a(2) =132a(3) =126a(4) =740a(5) =280a(6) =384a(7) =360a(8) =90a(9) =1406a(10) =224a(11) =570a(12) =2090a(13) =774a(14) =96a(15) =608a(16) =1408a(17) =168a(18) =4070a(19) =4266a(20) =516a(21) =680a(22) =2656a(23) =1110a(24) =360a(25) =252a(26) =1064a(27) =2340a(28) =672a(29) =7436

External references