A259433 Irregular table read by rows: suppose n has d decimal digits; then T(n,j) for 1 <= j <= d is the number obtained by discarding the d-j least significant digits of n.
1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 10, 1, 11, 1, 12, 1, 13, 1, 14, 1, 15, 1, 16, 1, 17, 1, 18, 1, 19, 2, 20, 2, 21, 2, 22, 2, 23, 2, 24, 2, 25, 2, 26, 2, 27, 2, 28, 2, 29, 3, 30, 3, 31, 3, 32, 3, 33, 3, 34, 3, 35, 3, 36, 3, 37, 3, 38, 3, 39, 4, 40, 4, 41, 4, 42
Offset: 1
Examples
Table begins: 1; 2; 3; 4; 5; 6; 7; 8; 9; 1, 10; 1, 11; 1, 12; ... 1, 10, 100; 1, 10, 101; ...
Links
- Matematico Fresnillense, Formulas para extraer digitos de un numero natural permutando
Crossrefs
Cf. A259434.
Programs
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Mathematica
Flatten[Table[ FromDigits[Take[IntegerDigits[r], j]], {r, 150}, {j, Length[IntegerDigits[r]]}]] (* Kellen Myers, Aug 16 2015 *)