A130429 List of all numbers n such that n is equal to the number of 7's in the decimal digits of all numbers <= n.

0, 9465000000, 9471736170, 9500000000, 9757536170, 9965000000, 9971736170, 10000000000, 19465000000, 19471736170, 19500000000, 19757536170, 19965000000, 19971736170, 20000000000, 29465000000, 29471736170

Offset: 1

Author

Graeme McRae, May 26 2007

Keywords

• base
• fini
• full
• nonn

Comments

A finite sequence with 49 terms.

Examples

			a(5)=9757536170 because the number of 7's in the decimal digits of the numbers from 0 to 9757536170 is 9757536170 and this is the 5th such number.
		

Links

• Graeme McRae, May 26 2007, Table of n, a(n) for n = 1..49 (full sequence)
• Tanya Khovanova and Gregory Marton, Archive Labeling Sequences, arXiv:2305.10357 [math.HO], 2023. See p. 4.

Crossrefs

Cf. A014778 for proof these sequences are finite; Also A101639, A101640, A101641, A130427, A130428, A130430, A130431; Cf. A130432 for the number of numbers in these sequences.