24108

Appears in sequences

• Triangle, read by rows, where the n-th row lists the (2n+1) coefficients of (1 + x + 4x^2)^n.at n=57A084604
• Number of partitions of n into parts but with two kinds of parts of sizes 1 to 10.at n=20A103929
• Numbers k such that there is a bigger number m satisfying A000203(k) = A000203(m) = m + k - gcd(m,k).at n=39A124140
• Elias omega coded prime numbers represented in decimal.at n=33A147764
• Indices of pentagonal pyramidal numbers which are the sum of two other such numbers: k such that A002411(k) = A002411(i)+A002411(j) for some i,j>0.at n=36A172437
• Number of reduced 3 X 3 magilatin squares with magic sum n.at n=26A174020
• The Wiener index of the double-comb graph \/_\/_\/...\/_\/ with 3n (n>=1) nodes. The Wiener index of a connected graph is the sum of the distances between all unordered pairs of vertices in the graph.at n=23A192025
• Numbers n such that for some m, A166133(m)=n, A166133(m+1)=n^2-1, in increasing order.at n=41A256407
• Number of squares of all sizes in polyominoes obtained by union of two pyramidal figures (A092498) with intersection equals A002623.at n=40A260918