1063611

Appears in sequences

• Numbers k such that k divides s(k), where s(1)=1, s(j) = s(j-1) + j*13^(j-1).at n=32A014953
• Pseudo-powers to base 3: numbers k that are not powers of 3 such that k divides 2^k + 1.at n=27A016057
• Triangular numbers with every digit a triangular number.at n=27A062100
• Number of walks within N^2 (the first quadrant of Z^2) starting and ending at (0,0) and consisting of n steps taken from {(-1, 0), (-1, 1), (0, -1), (0, 1), (1, -1)}.at n=15A151347
• Triangular numbers of the form p*w, where p is a prime number and w is a prime power (A025475).at n=25A225674
• Triangular numbers that are the product of a square number and a prime number.at n=40A253653
• Terms k of A006521 such that 2*k is a term of A124240.at n=36A289257
• Number of nonisomorphic spanning trees of the triangular snake nC_3.at n=13A374721