18697

Appears in sequences

• a(n) = a(n-1) + a(n-2) + 1 for n > 1, a(0)=1, a(1)=5.at n=18A022319
• Numbers n such that n and prime(n) end with the same three digits.at n=14A067841
• Main diagonal of table A083047.at n=13A083048
• Second column of number triangle A110245.at n=46A110246
• Indices of primes in tribonacci sequence A000073, minus 2.at n=9A122991
• 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), (-1, 1, -1), (-1, 1, 0), (1, 0, 0)}.at n=10A148532
• Numbers n with property that n^2 is a concatenation of three 3-digit primes.at n=28A153139
• Numbers k with same last four digits as p, prime(k)=p.at n=2A232189
• Number of partitions p of n such that the number of numbers p having multiplicity 1 in p is not a part and the number of numbers having multiplicity > 1 is not a part.at n=47A241417