23609

Properties

Appears in sequences

• Prime number spiral (clockwise, North spoke).at n=26A054551
• Number of permutations of length n which avoid the patterns 321, 12354.at n=15A116846
• 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, 0), (-1, 1, 1), (0, 0, -1), (1, 0, 1)}.at n=9A149243
• Primes of form a^2+b^2 such that a^4+b^4 and a^8+b^8 are primes.at n=19A182313
• Number of chiral pairs of length n words with integer entries that cover an initial interval of positive integers.at n=6A327091
• The number of nonnegative integers that have a shortest divisor addition chain of length n.at n=19A352079
• Prime numbersat n=2627