18968

Appears in sequences

• Numbers whose base-5 representation contains exactly three 1's and three 3's.at n=30A045247
• Expansion of Product_{m>=1} (1+m*(m+1)*q^m).at n=11A092485
• Row sums of triangle defined in A095181.at n=15A160915
• a(n) = the smallest positive integer that, when written in binary, contains both binary n and the binary representation of the n-th Fibonacci number as substrings.at n=17A165822
• Triangle, read by rows, that transforms diagonals in the table of coefficients of successive iterations of x*(1+x)^2 (cf. A166888).at n=15A166890
• Column 1 of triangle A166890.at n=5A166891
• Number of partitions of n such that the number of parts and the greatest part are coprime.at n=38A200750
• Number of partitions of n^2 into distinct squares > 1.at n=46A298642
• Expansion of Product_{k>=1} 1/((1 - x^k)*(1 - x^(3*k))).at n=30A318026
• a(n) is the number of d+/d- diagonally convex polyplets (polyominoes which need only touch at corners) with n cells.at n=6A319321
• Number of compositions of n into parts with distinct multiplicities and with exactly eight parts.at n=30A321778
• Numbers k such that the k-th composition in standard order is an alternating permutation of {1..k} for some k.at n=34A349051
• Expansion of g.f. A(x) satisfying A(x) = A( x^3 + 3*x^2*A(x)^2 )^(1/3), with A(0)=0, A'(0)=1.at n=15A370440