A004242 a(n) = ceiling(1000*log(n)).

0, 694, 1099, 1387, 1610, 1792, 1946, 2080, 2198, 2303, 2398, 2485, 2565, 2640, 2709, 2773, 2834, 2891, 2945, 2996, 3045, 3092, 3136, 3179, 3219, 3259, 3296, 3333, 3368, 3402, 3434, 3466, 3497, 3527

Offset

1,2

Links

Table of n, a(n) for n=1..34.

Mathematica

Ceiling[1000Log[Range[40]]] (* Harvey P. Dale, Oct 24 2023 *)

Crossrefs

Sequence in context: A031946 A049356 A020385 * A177215 A185861 A115493

Adjacent sequences: A004239 A004240 A004241 * A004243 A004244 A004245

Keyword

nonn

Author

N. J. A. Sloane

Status

approved