A024404 Number of products of distinct primes <= prime(n) equal to -1 (mod prime(n)).

1, 1, 0, 1, 2, 1, 3, 7, 10, 17, 33, 56, 102, 197, 359, 617, 1128, 2182, 3966, 7488, 14538, 26766, 51232, 95325, 174742, 335555, 657893, 1266230, 2485507, 4793512, 8521770, 16519171, 31580739, 62246045, 116079942, 229064794, 440508973, 848388680

Offset

1,5

Links

Table of n, a(n) for n=1..38.

Crossrefs

Sequence in context: A178079 A258987 A174254 * A077173 A063509 A137766

Adjacent sequences: A024401 A024402 A024403 * A024405 A024406 A024407

Keyword

nonn

Author

David W. Wilson

Status

approved