A227181 Irregular table: integers from n to n^2 followed by integers from (n+1) to (n+1)^2.

0, 1, 2, 3, 4, 3, 4, 5, 6, 7, 8, 9, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36

Offset

0,3

Links

Antti Karttunen, Rows 0..31, flattened

Formula

a(n) = A227177(n)+ A227179(n). [As a sequence].

Example

Row n is A002061(n) terms long, and contains successive integers from n to n*n:
0;
1;
2, 3, 4;
3, 4, 5, 6, 7, 8, 9;
4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16;
...

Mathematica

Flatten[(#+Range[(#1-2) (#1-1)+1]-2&)[Range[7]]] (* Peter J. C. Moses, Jul 11 2013 *)
Table[Range[n, n^2], {n, 0, 6}]//Flatten (* Harvey P. Dale, Apr 03 2021 *)

Prog

(Scheme): (define (A227181 n) (+ (A227177 n) (A227179 n)))

Crossrefs

Right edge: A000290. Central diagonal: A000217. Cf. also A227147.

Sequence in context: A322290 A030323 A285872 * A268233 A309241 A065651

Adjacent sequences: A227178 A227179 A227180 * A227182 A227183 A227184

Keyword

nonn,tabf

Author

Antti Karttunen, Jul 03 2013

Status

approved