22987

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 33 ones.at n=2A031801
• Decimal encoding of the prime factorization of n is a multiple of n.at n=3A067598
• The prime factors of n are also prime factors of the decimal encoding (A067599) of the prime factorization of n.at n=29A067671
• 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, 0, 1), (-1, 1, -1), (1, -1, -1), (1, 0, 1)}.at n=10A148544
• Numbers n such that phi(n) = phi(n+12) and n is not divisible by 2.at n=30A217141
• a(n) = A273059(4n+2).at n=26A275918
• Numbers such that the sum of the reverse of their aliquot parts is equal to the reverse of the sum of their aliquot parts.at n=19A278948