26461

Appears in sequences

• Crystal ball sequence for {E_6}* lattice.at n=4A008402
• Base 5 digits are, in order, the first n terms of the periodic sequence with initial period 1,3,2.at n=6A037612
• Numerators of continued fraction convergents to sqrt(896).at n=4A042732
• a(n) = floor(a(n-1)/2) + a(n-2) with a(0)=1, a(1)=2.at n=41A064650
• Numbers k such that sigma(k) and phi(k) are both palindromes.at n=9A113929
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, -1), (-1, 1, 0), (0, 1, -1), (1, 0, 1)}.at n=9A149190
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 1), (0, 0, 1), (0, 1, -1), (1, 0, 1)}.at n=8A150402
• a(n) = 60*n^2 + 1.at n=21A158673
• Start with a(1) = 1, a(2) = 1, then a(n)*3^k = a(n+1) + a(n+2), with 3^k the smallest power of 3 (k>0) such that all terms a(n) are positive integers.at n=25A233525
• Number of nX5 0..1 arrays with every element equal to 0, 1, 2, 4 or 7 king-move adjacent elements, with upper left element zero.at n=14A298491
• Smallest number k with A355915(k) = n.at n=32A356792
• Nonprime numbers k whose arithmetic derivative k' (A003415) is a Fibonacci number (A000045).at n=39A362141