Number of permutations s_1,s_2,...,s_n of 1,2,...,n such that for all j=1,2,...,n, j divides Sum_{i=1..j} s_i^3.
A291355
Number of permutations s_1,s_2,...,s_n of 1,2,...,n such that for all j=1,2,...,n, j divides Sum_{i=1..j} s_i^3.
Terms
- a(0) =1a(1) =1a(2) =0a(3) =2a(4) =4a(5) =8a(6) =0a(7) =8a(8) =16a(9) =24a(10) =0a(11) =46a(12) =46a(13) =46a(14) =0a(15) =218a(16) =1658a(17) =6542a(18) =0a(19) =0a(20) =2172a(21) =6200a(22) =0a(23) =0a(24) =0a(25) =0a(26) =0a(27) =1652a(28) =5878a(29) =26778
External references
- oeis: A291355