A377352 The smallest deficient number that begins a run of at least n consecutive deficient numbers with the same number of distinct prime factors.

1, 2, 2, 2, 2, 2, 2, 212, 295, 1132, 1132, 1132, 1132, 1039432, 1039432, 1039432, 45636009, 45636009, 45636009, 298472906, 2030958922

Offset

1,2

Links

Table of n, a(n) for n=1..21.

Example

a(8) = 212 because 212 is the smallest deficient number that begins a run of 8 consecutive deficient numbers (212, 213, 214, 215, 217, 218, 219, 221) with the same number of distinct prime factors, i.e. 2.
a(9) = 295 because 295 is the smallest deficient number that begins a run of 9 consecutive deficient numbers (295, 296, 297, 298, 299, 301, 302, 303, 305) with the same number of distinct prime factors, i.e. 2.

Crossrefs

Cf. A001221, A005100.

Sequence in context: A319991 A323275 A139514 * A330955 A330956 A190617

Adjacent sequences: A377349 A377350 A377351 * A377353 A377354 A377355

Keyword

nonn,more,hard

Author

Shyam Sunder Gupta, Oct 26 2024

Status

approved