30048
domain: N
Appears in sequences
- Convolution of odd numbers and A000201.at n=37A023658
- "EFK" (unordered, size, unlabeled) transform of 2,4,6,8,...at n=16A032309
- a(n) = 2*(n-1)*(n^2 + 1).at n=24A071233
- Sum of next n even interprimes.at n=17A075675
- G.f. satisfies: A(x) = A(x^2)^2 + x*A(x^2)^3.at n=29A174512
- Numbers k that divide the base-5 reversal of k.at n=16A222816
- Expansion of (2*x+4*x^2) / (1-2*x-2*x^2+2*x^3).at n=11A285185
- Irregular table read by rows: Take an octagon with all diagonals drawn, as in A333075. Then T(n,k) = number of k-sided polygons in that figure for k >= 3.at n=18A333076
- a(n) = number of nonempty subsets of {1,2,...,n} having a partition into two subsets with the same sum of elements.at n=15A357212
- Number of partitions of n into distinct parts where there are k^2-1 kinds of part k.at n=13A363599