139376

Appears in sequences

• 30-gonal pyramidal numbers: a(n) = n*(n+1)*(28*n-25)/6.at n=31A256650
• Subsequence of the automorphic numbers (A003226) with initial term 6 and such that a(n+1) ends with the digits of a(n).at n=2A274464
• Triangle read by rows: T(n,k) is the number of direct sum decompositions of a finite vector space of n dimensions over GF(2) that have exactly k subspaces of dimension 1, n>=0, 0<=k<=n.at n=16A287206
• Expansion of (1/x) * Series_Reversion( x / (1 + x^2 * (1 + x)^4) ).at n=12A389155